Picture frame



FIG. 1 is a front elevational view of a picture frame, showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a top plan view;

FIG. 4 is a bottom plan view;

FIG. 5 is a side elevational view, the opposite side being identical thereto; and,

FIG. 6 is a cross-sectional view taken along line 6--6 in FIG. 1. 

The ornamental design for picture frame, as shown and described. 